Direct determination equalizer system
AssigneeAgilent Technologies, Inc.
InventorsMark Woodward, Marlin Viss
Life of this patent
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Abstract
A direct determination equalizer system (“DDES”) for compensating for the deterministic effects of a transmission channel and a data source is disclosed. The DDES may include an equalizer having equalizer-tap coefficients, a cross-correlator configured to receive the first sampled signal and an ideal signal and in response produce a cross-correlated signal, and a processor in signal communication with the equalizer and the cross-correlator. The equalizer is configured to receive a first sampled signal and in response produce an equalized output data signal sequence and the processor is configured to determine the equalizer-tap coefficients from the cross-correlated signal.
Claims33
A method for compensating for the deterministic effects of a transmission channel on a data source utilizing a direct determination equalizer system (“DDES”) having an equalizer, the method comprising:
- acquiring a channel output data signal sequence spanning multiple bits;
- determining an ideal data signal;
- cross-correlating the channel output data signal and the input data signal to produce a cross-correlated signal;
- determining the largest value of the cross-correlated signal;
- and
- determining equalizer-tap coefficients for the equalizer.
A direct determination equalizer system (“DDES”) for compensating for the deterministic effects of a transmission channel on a data source, the DDES comprising:
- an equalizer having equalizer-tap coefficients, wherein the equalizer is configured to receive a first sampled signal and in response produce an equalized output data signal sequence;
- a cross-correlator configured to receive the first sampled signal and an ideal signal and in response produce a cross-correlated signal;
- and
- a processor in signal communication with the equalizer and the cross-correlator, wherein the processor is configured to determine the equalizer-tap coefficients from the cross-correlated signal.
A signal-bearing medium having software for compensating for the deterministic effects of a transmission channel and a data source utilizing a direct determination equalizer system (“DDES”) having an equalizer, the signal-bearing medium comprising:
- logic configured for acquiring a channel output data signal sequence spanning multiple bits;
- logic configured for determining an ideal data signal;
- logic configured for cross-correlating the channel output data signal and the input data signal to produce a cross-correlated signal;
- logic configured for determining the largest value of the cross-correlation signal;
- and
- logic configured for determining equalizer-tap coefficients for the equalizer.
Dependencies are inferred from the claim text.